עַד (ʻadadnoun|masculineperpetuity)
[Heb] עַד ETCBC: עַד‎ (subs|future) OSHL: p.aq.ab TWOT: 1565a GK: H6329 Greek: αἰών
Derivation: from עָדָה;
Strong's: properly, a (peremptory) terminus, i.e. (by implication) duration, in the sense of advance or perpetuity (substantially as a noun, either with or without a preposition)
KJV: eternity, ever(-lasting, -more), old, perpetually, [phrase] world without end.